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CC3351: Wi-Fi channel manipulation

Parv Patel
Prodigy 240 points

Part Number: CC3351

Hi, 

I want to perform Wi-Fi channel manipulation on the CC3351 Wi-Fi module. 
For this, I am referring to the CC33XX Linux user guide

Is there any additional documentation or method available for manipulating Wi-Fi channels? 

Best, 
Parv

  • 0
    TI__Mastermind 36410 points

    Hello Parv,

    Not sure I understand what it is you are looking for in terms of 'manipulating Wi-Fi channels'. CC3351 support station and AP mode. In AP mode, you can set the WiFI channel from hostapd.conf. And in station mode, the channel is dependent on what the AP you are connecting to has already determined. However, when a scan command is issued, the cc3351 can actively and passively scan along all of the wifi channels, but this happens automatically in the firmware and it is not accessible by the user.

    Can you please clarify what it is you are looking for?

  • 0 in reply to Sabeeh Khan1
    Prodigy 240 points

    Hi Sabeen,

    We are using our custom boards where one board operates in AP mode and the other operates in station mode. I would like to modify the Wi-Fi channel configuration and antenna settings. For this, I am referring to the link attached above.

    I want to confirm whether this is the correct approach or if I am going in the wrong direction.

    Best regards,
    Parv

  • 0 in reply to Parv Patel
    TI__Mastermind 36410 points

    Hi Parv,

    Then you are in the correct direction using the Linux User's guide. You can change the channel of the AP mode device using hostapd.conf. See the 'channel' variable in that file.

    As for the station device, once the AP comes up, it will automatically scan for the AP and switch to the same channel. No additional configuration is necessary other than using wpa_supplicant to connect to the AP mode device.

    Antenna settings you can find through the INI Configuration, also in the Linux User Guide.

  • 0 in reply to Sabeeh Khan1
    Prodigy 240 points

    Hi Sabeeh, 

    Thank you for the clarification on AP/Station channel configuration and antenna settings. I have one query regarding regulatory pre-compliance testing.

    I want to perform Wi-Fi and BLE regulatory pre-compliance tests on the AM62Lx platform.

    For this, I would like to know:

    1. Calibrator Tool Usage:

      • How can I use the TI calibrator tool to put Wi-Fi and BLE radios into continuous transmit (TX), continuous receive (RX), tone, or packet mode?

      • Are there specific commands or scripts available for enabling test modes required by regulatory labs?

    2. Test Mode Support in Firmware or Drivers:

      • Does the Wi-Fi/BLE firmware included in the SDK support test/production modes required for regulatory compliance (FCC/CE)? If yes, where can I find documentation for enabling these modes?

    3. Setup Required for Pre-Compliance Testing: 

      • What hardware/software configuration is recommended for performing pre-compliance tests?

      • Do I need any special binaries, RF test firmware, or calibration data?


    Any guidance or reference documents related to Wi-Fi/BLE regulatory testing and calibration/test utilities for AM62x would be very helpful.

    Best, 
    Parv

  • 0 in reply to Parv Patel
    TI__Mastermind 36410 points

    Hi Parv,

    In the linux user guide you can find all the information needed by your questions, so I suggest have a read through of the 'Calibrator Tool' guide. There is an option for continuous TX test. We don't have continuous RX because you will need to eventually collect the statstics.

    Yes, the same firmware provided in SDK can be used for test mode and regulatory compliance. The firmware has a special "test" mode built in (only used when calibrator or radiotool are active).

    Parv Patel said:

    • What hardware/software configuration is recommended for performing pre-compliance tests?

    • Do I need any special binaries, RF test firmware, or calibration data?

    This depends on your test house, but likely they will conduct both radiated and conducted tests. So your hardware may need to support this. Suggest to reach out to the test house and confirm.

  • 0 in reply to Sabeeh Khan1
    Prodigy 240 points

    Hi Sabeeh, 

    I have provided more details to clarify my query in the TI Thread.
    Could you please check it?

    If you would like to close the thread now, you may go ahead and close it.

    Best, 
    Parv